Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Emma III > Hand > Flashcards

Hand Flashcards

1
Q

surface anatomy

A 
palmar side
digital/proximal/palmar interphalangial crease
digital/proximal/thenar/wrist crease
thenar eminence 
hypothenar eminence 
dorsal side
metacarpophalangeal joints (knuckles) 
extensor digitorum tendons
1st dosal interosseous m.
anatomical snuff box (radial pulse)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

total hand and wrist bones

A

27, not including sesamoid bones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

ligaments of hand

A 
piso-metacarpal ligament
piso-hamate ligament
palmar radiocarpal ligament 
dorsal radiocarpal ligament
transverse carpal ligament (flexor retinaculum)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

which hand/wrist joints are hinge joints?

A

interphalangeal joint

- motion in only one direction (flexion/extension)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

which hand/wrist joints are condyloid joints?

A 
MCP joints
aD/aBduction
flexion
extension
circumduction
axial rotation
(only in extended position)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

which hand/wrist joints are saddle joints?

A

1st carpometacarpal joint

aD/aBduction
flexion/extension
opposition
NO axial rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

arthrodial (sliding) joint

A

2nd-5th carpometacarpal joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

ganglion cyst (synovial cyst)

A

benign swelling above joints (usually near scaphoid/lunate joint - 80%)

painless

bc of outpocketing/herniation of synovial capsule at a weakened region

50% recurrence post aspiration/surgery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

osteoarthritis

A 
wear &tear disease 
women>men
asymmetry
cartilage/bone loss
bony growths (Heberden's node, Bouchard's node) 
may or may not be painful
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

RA

A 
AI disease
women>men
symmetrical
joint pain
ulnar deviation 
joint swelling (soft nodules)

boutonniere thumb deformity (PIP flexion, DIP extension)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

difficulty making OK sign

A

anterior interosseous nerve damage

  • Paresis of flexor digitorum profundus (lateral) and flexor pollicus longus.
  • a pinch instead due to weakened flexion of interphalangeal joint of thumb and distal interphalangeal joint of index finger
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

fibrous and synovial digital sheaths

A

fibrous sheaths (cruciform and annular shapes)

digital synovial sheath
synovial sheath
- common synovial sheath (ulnar bursa)
- FPL sheath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Inability to protonate could be due to

A

medial n. damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Outcrop muscles

A

APL
EPB
EPL
EI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

extensor pollicis longus

A

pivots on dorsal radial (Lister’s) tubercle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

central band

A

extends PIP

17
Q

lateral band

A

extends DIP

18
Q

unipennate lumbricals

A

1 and 2

19
Q

bipennate lumbricals

A

3 and 4

20
Q

boutonniere (“button hole’) deformity

A

via jamming finger, laceration, RA

CENTRAL band tears

lateral bands move ventral to PIP axis (via lumbrical/interosseous m. action)

relocated lateral bands –> hyperextend DIP and flex PIP as attempts are made to extend finger

21
Q

mallet finger

A

ruptured extension tendon (where LATERAL bands insert onto distal phalanx)

22
Q

intrinsic thumb muscles

A

abductor pollicis brevis
flexor pollicis brevis
opponens pollicis
aDductor pollicis

23
Q

extrinsic thumb muscles

A

extensor pollicis longus
extensor pollicis brevis
aBductor pollicis longus
flexor pollicis longus

24
Q

which thenar m. has superficial and deep heads? innervation?

A

flexor pollicis brevis

superficial head –> median nerve (recurrent branch)
deep head –> ulnar n.

25
Q

superficial palmar arch of radial a. passes between which two thenar muscles?

A

opponens pollicis

aBductor pollicis brevis

26
Q

deep palmar arch of radial a. passes through 2 heads of which thenar muscles?

A

through transverse and oblique heads of adductor pollicis

27
Q

primary m. that flex the metacarpophalangeal joint

A

lumbricals

28
Q

mallet finger

A

lateral band is avulsed from the distal phalanx

29
Q

ulnar n. goes through ulnar tunnel and splits into …

A

deep (motor) branch of ulnar n.

superficial (mostly sensory, also supplies palmaris brevis)

30
Q

if only recurrent branch of median n. damaged –>

A

thumb opposition lost

31
Q

carpal tunnel syndrome: m. and skin affected

A

APB
FPB (superficial head only)
opponens pollicis
1st and 2rd lumbricals

lateral 3.5 digits (palmar side)
lateral, distal ends of 3.5 digits (dorsal side)

32
Q

persistent median a.

A

(5-10% prevalence)
norm regresses during fetal life

recognized cause of carpal tunnel syndrome (usu due to thrombosed MA, anticoagulant therapy often clears sx)

often assoc w/ bifurcated median n.

33
Q

ulnar (guyon’s) tunnel syndrome

A

compression of ulnar n. in ulnar canal (focal damage to myelin sheath: neuropraxia)

MOI: pressure on ulnar canal (extended cycling)

m. affected: all intrinsic hand m. EXCEPT 4.5 innervated by median n.

deficits

  • opposition (weak ODM)
  • pinching (weak adductor pollicis)
  • loss of fine motor control

skin affecetd

  • medial 1.5 fingers
  • paresthesia, pain
  • temporary recovery may be slow

Emma III (28 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions